>>13970158
Part of the problem was, that once it was corrupted and they realized it's potential, they had to get it to spread. So, what to do? Most of Europe and everywhere else were essentially polytheists, and when they tried to sell the idea of a single God, and change holidays etc, most of the pagans were unwilling to give up their, "holidays," like yuletide for example. So, in order to make, the, "new," version of, "Christianity," more palatable, they kept a lot of the old pagan holidays and just sort of Christianized them.
Truth be told, Jesus didn't change a darn thing as far as Mosaic holidays are concerned. Passover, Pentecost and festival of booths actually apply to both Jew and Gentile once you understand what they represent. Christmas and almost every holiday we observe have pagan roots.